Rowland V. Lee's "SON OF FRANKENSTEIN" trailer (1939)
Last appearance of Karloff AS the creature (he will appear in two other episodes but portraying another character). Very good third effort on the Frankenstein "franchise" but one definite step towards the more and more mediocre episodes made later.
Audio/Visual sound, color
more info on http://www.imdb.com/title/tt0031951/